Thanks for playing Drops! We totally understand where you are coming from. Unfortunately, we don’t have access to your payment account since it’s handled by Apple or Google. We’re really sorry that this as it was not obviously communicated. That’s why we cannot manage your subscription from our end, only you can in your phone’s settings, here is how:

A reminder as well, first you need to cancel the recurring subscription - otherwise you’ll be charged again.

Also, we’d like to know more about your reasons why you decided to unsubscribe. Is there anything about the app that doesn’t meet your learning needs? Any technical issues that we can fix for you? Sorry to see you leave, we hope to meet you soon! Our team is working on a few bombastic features and plenty of new vocabulary and languages that will be available very soon. Sorry for the inconveniences.
Cheers,